Space

Fires From Asteroid May Have Spared Some Regions

Publication: National Geographic News   Date: September 16, 2002   View Article

About 65 million years ago a space rock slammed into Mexico’s Yucatan Peninsula and scattered high-velocity debris around Earth, igniting wildfires in North America, the Indian subcontinent, and most of the equatorial part of the world.

However, northern Asia, Europe, Antarctica and possibly much of Australia may have been spared the inferno, according to a new computer simulation of how the wildfires spread around the world.

Satellites Aid Sustainable Land Use in Amazon

Publication: National Geographic News   Date: October 31, 2001   View Article

Computers and satellites are being successfully harnessed to the problem of biodiversity conservation in the Amazon rain forest.

Scientists believe that at least half of the world’s animal, plant, and insect species reside in the rain forest, an area half the size of the continental United States.

Forty Thousand Children Help Build Space “Disco Ball”

Publication: National Geographic News   Date: October 3, 2001   View Article

Disco isn’t dead; it’s just gone high-tech—very high tech.

A 200-pound (90-kilogram) satellite covered in 1,500 mirrors hand-polished by schoolchildren around the world was launched into a low orbit at the weekend to measure the effects of solar storms on the density of Earth’s upper atmosphere.

© 2008-2010 Collected Writings By John Roach